Jackson JSON Tutorial

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This tutorial illustrates the most common Jackson 2 tasks, problems and solutions while marshalling and unmarshalling JSON.

Basic Jackson Marshalling

Learn quickly how to serialize a Java Entity to a JSON String – and control the mapping process perfectly, to reach the exact JSON format you’re aiming for.

• Ignore Properties on Marshalling

• Ignore Null Fields

• Change Name of Field

Basic Jackson Unmarshalling

Learn how to deserialize a JSON String into a Java Entity – no matter how weird the JSON input is, we need to map it to a well defined Java Entity class.

• Parse JSON to JsonNode

• Unmarshalling json with Unknown Properties

Advanced Jackson Marshalling

Learn advanced serialization configuration and tuning to deal with conditions, various data types and custom Jackson exceptions.

• Serialize Only Fields that meet a Custom Criteria with Jackson

• Serialize Enums as JSON Objects

• JsonMappingException (No serializer found for class)

• Jackson – Custom Serializer

• Jackson Date

• Jackson JSON Views

• Jackson Exceptions – Problems and Solutions

Advanced Jackson Unmarshalling

Learn more advanced tips and tricks for unmarshalling JSON input into Java Entity classes.

• Unmarshall to Collection/Array

• Jackson – Custom Deserializer

The implementation of all these examples and code snippets can be found in my github project – this is an Eclipse based project, so it should be easy to import and run as it is.

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